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Abundance, Composition, and Potential Ecological Risks of Microplastics in Surface Water at Different Seasons in the Pearl River Delta, China

文献类型： 外文期刊

作者： Gao, Yuan 1 ; Fan, Keyu 1 ; Wang, Chao 1 ; Zeng, Yanyi 1 ; Li, Haiyan 1 ; Mai, Yongzhan 1 ; Liu, Qianfu 1 ; Lai, Zini 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Guangzhou 510380, Peoples R China

2.Minist Agr & Rural Affairs, Fishery Ecol Environm Monitoring Ctr Pearl River, Guangzhou 510380, Peoples R China

3.Guangzhou Sci Observing & Expt Stn Natl Fisheries, Guangzhou 510380, Peoples R China

4.Key Lab Aquat Anim Immune Technol Guangdong Prov, Guangzhou 510380, Peoples R China

5.Tianjin Agr Univ, Tianjin Key Lab Aqua Ecol & Aquaculture, Tianjin 300384, Peoples R China

关键词： microplastic; Pearl River Delta; seasonal change; surface water; potential ecological risk

期刊名称：WATER （ 影响因子：3.53； 五年影响因子：3.628 ）

ISSN：

年卷期： 2022 年 14 卷 16 期

页码：

收录情况： SCI

摘要： In this study, microplastics in the surface water in the Pearl River Delta during different seasons were studied to analyze their temporal and spatial distribution, morphological characteristics, related socio-economic indicators, and potential ecological risks. Based on an analysis of surface water samples from 13 sampling sites, we found that the temporal and spatial distribution of microplastics in the Pearl River Delta were unbalanced. The microplastic abundances at the Qingqi, Chencun, Zuotan, and Beijiao sites were tremendously higher than those at other sites. Nevertheless, the abundance of microplastics at most sites was tremendously higher in the rainy season than dry season. Meanwhile, the morphological characteristics of microplastics had a strong correlation with the changes of season and site location. During the rainy season, the major color, shape, and size distribution of microplastics were gray (38.64%), strip (78.29%), and 100-500 mu m (57.38%), respectively. The most usual color, shape, and size distribution of microplastics in the dry season were black (38.64%), granular (78.29%), and 0-100 mu m (70.29%), respectively. As for the socio-economic indicators, including the degree of afforestation as well as the extent of industrial, transportation, and other human activities, all had varying degrees of impact on microplastic abundances. The potential ecological risk assessments demonstrated that most sites in the Pearl River Delta had a high potential for ecological risk related to microplastic pollution, which should be given more attention in the future. In summary, our investigations offer a theoretical basis for research related to microplastics in the Pearl River Delta and can further improve our understanding of the need to protect aquatic environments by exploring the overall ecological risks posed by microplastics.

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